Spraying apparatus.



No. 774,175. PATENTBD'NOV. 8, 1904. W. H. HEARD.

SPRAYING APPARATUS.

APPLICATION FILED SEPT. 9. 1901.

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W. H. HEARD.

SPRAYING APPARATUS.

APPLICATION FILED SEPT. 9. 1901.

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viineak UNITED STATES Patented November 8, 1904.

PATENT OFFICE.

W'ILLIAM HENRY HEARD, OF LONDON, CANADA.

SRRAYING APPARATUS- SPECIFIGATION forming part of Letters Patent No.774,175, dated November 8, 1904. Application filed September 9, 1901.Serial No. 74,808. (No model.)

To a whom it may concern.-

Be it known that LVVILLIAMHENRY HEARD, of the city of London. in thecounty of Middlesex, Province of Ontario, Canada, have invented certainnew and useful Improvements in Spraying Apparatus, of which thefollowing is a specification.

The object of my invention is to improve the construction of sprayingapparatus of the general nature of that described in my prior UnitedStates patent, No. 654,151, dated July 24, 1900; and it consists,essentially, of improvements in the strainer and agitator, of a' newtelescopic extension-rod, of an improved nozzle and drip-cap, of meansfor forming a connection between the pressure part of the machine andthe suction pipe, so that the strainer may be'blown clear ofobstructions when necessary, of means for holding the plunger-rod inposition when it is disconnected from the handle, and of improved wheelattachments and handles for the barrel-tank to which the apparatus isconnected, substantially as hereinafter more specifically described andthen definitely claimed.

Figure 1 is a perspective view of my invention as used with atank-barrel. Fig. 2 is a perspective view of the pump alone. Fig. 3 is asectional elevation of part of the telescopic extension-rod, showing thenozzle and drip cap. Fig. 4 is a perspective view of the supply-pipe ofthe nozzle with the drip-cap. Fig.

5 is a perspective detail of the cap of the easing on the nozzle andmetal disk in which the spray-opening is formed. Fig. 6 is a verticalsection of the agitator and strainer on the'end of the suction-pipe.Fig. 7 is a sectional plan of the strainer and the brush on theagitator. Fig. 8 is a sectional detail of the pressure-regulator.

In the drawings like letters of reference indicate corresponding partsin the different figures.

As the general construction and operation of the pump has been describedin the prior patent referred to, it will not be necessary to go intodetails. Suifice it to say that A is the suction-pipe of the pump; B,the dischargepipe; C, the air-chamber; D, the plunger-tube; E, thebase-casting in which the valves are located; F, the handle pivoted tothe top of the air-chamber; G, the plunger-rod pivoted to the handle andalso to the plunger, (not shown;) H, the agitator-rod pivoted to thehandle and also secured to the agitator I; J, the hollow extension-rodconnected, by means of the flexible hose K, with the upper end of thedischarge-pipe B, and L the two-handled stopcock at the bottom of theextension-r0d.

The lower end of the suction-pipe is pro vided with a cylindricalstrainer. This strainer comprises a cage formed in two parts M and N.The part M comprises a circular base a, from the center ofwhich extendsupwardly a piece of perforated pipe 7), threaded so that it may bescrewed into the lower end of the suction-pipe. (See Fig. 6.) To thelower side of the base a are connected suitable legs (Z. The part N ofthe cage fits loosely about the suction-pipe and has a series of siderods (2 connected thereto. The two parts M and N thus form a cage aroundthe lower end of the suction-pipe, the spaces between the side rodsforming openings communicating with the interior of the cage. Around theset of side rods is placed a gauze cylinder f, which is securely held inposition against the side rods by having its edges fitted into thegrooves 0 and g in the parts M and N. Two of the side rods are longerthan the rest of the set and are adapted to pass through holes in thebase a and are bent orotherwise caused to engage the base to hold thetwo parts of the strainer together. The agitator I, being hollowunderneath, when in its lowermost position completely surrounds andincloses the strainer. Hence as the agitator is lifted up and down whenthe pump is working the surface of the strainer is kept from clogging bythe strong currents of fluid thus caused to rush over its surface. As anadditional precaution I secure to the plate 0 of the agitator a circularbrush P, the bristles of which are adapted to brush the surface of thegauze cylinder f as the agitator is raised and lowered. When this brushis used, it becomes almost impossible to choke up the strainer. Theplate 0 is secured to the upper part of the agitator in a novel manner.The lower edge of the circular part of the I00 agitator is reduced inthickness, as shown in Fig. 6, forming a shoulder Z and a thinprojecting flange j. A hole is formed in the plate 0 to enable itto fltaround the flange j against the shoulder 2 The flange j is then turnedover, as shown in the drawings, and pressed down in contact with theunder side of the plate, which is thus securely held in position.

The extension-rod J is made telescopic, a second extension-rod, Q, beingmade to slide therein. The upper end of the extension-rod J has a nut isscrewed thereon. This nut is shouldered on the inside, as shown. toengage the flange Z, formed on the lower end of the extension-rod Q,which is adapted to slide through the body of the nut. On the nut isscrewed the stufling-box m, adapted to make tight the opening in the nutthrough which the second extension-rod passes. The upper end of thesecond extension-rod, Q, is threaded, so that the coupling-nut a of thenozzle R may be screwed thereon. On the nozzle, preferably on thecoupling-nut thereof, is cast integrally a disk-shaped flange S to serveas a drip-cap. Screwed into the coupling-nut a is the supply-pipe 0,having a large end p. The upper end of the supplypipe is closed, asindicated. The casing of the nozzle is formed in two parts, the body Tand the cap U, the cap screwed onto the outside of the body, as shown.The body is shaped to fit underneath the enlarged end of thesupply-pipe, as shown. In the cap is formed an opening q, surrounded byan annular flange Beneath this flange is fitted a circular steel disk5*, and between the disk and the upper end of the body of the casing isplaced a packing-ring t. The upper end of the supply-pipe is preferablyreduced in diameter, as shown, and from the annular space thus formedextends downwardly at the opposite sides of the pipe two similarinclined grooves a, which have an opening communieating with theinterior of the pipe. The reducing of the diameter of the end of thesupply-pipe gives a free discharge of fluid from the grooves. At thecenter of the end of the supply-pipe is located the disgorgingneedle c,and in the center of the disk 8, immediately opposite the end of thedisgorgeneedle, is formed the spray-opening w. When the two parts of thecasing are screwed together, as indicated in Fig. 3, sufficient space isleft between the disk 8 at the end of the suction-pipe to permit of thecasing being slipped up and down to force the needle into and withdrawit from the spray -opening, so as to effectually disgorge the same if itbecomes clogged.

The operation of the nozzle is substantially as follows: -The stream ofliquid entering through the supplypipe passes from opposite sidesthereof through the inclined grooves a, which cause it to have awhirling actionin the small chamber formed between the disk 8 and theend of the supply pipe, discharging through the spray-opening in a finespray. The pressure of the fluid in this chamber is sufficient tomaintain the casing in its raised position, with the shoulder at thebottom of the body portion pressed into contact with the packing-ring a,p'eferably placed around the shoulder formed b7 the enlarged end of thesupply-pipe. If it becomes necessary to disgorge the nozzle, the cap maybe pressed against any convenient stationary body. The casing may thusbe slid backward on the supply-pipe and the needle caused to disgorgethe spray opening, as already described. Upon releasing the pressure onthe cap the pressure of the fluid within the casing returns the casingto its normal working position.

The use of the detachable steel disk .5 is an important feature of myinvention, as when an ordinary brass cap is used with a sprayopeningtherein the hole soon becomes worn too large and it is necessary toreplace the entire cap. With my steel disk this wearing takes place muchmore slowly, and if the spray-opening does become worn too large itcosts exceedingly little to replace the disk. It further becomespossible by having disks of different thickness with differentsizedopenings therein to produce the spray in any form desired either closeto the nozzle or some distance away from it, so that the nozzle isreadily adapted to different classes of work.

It is sometimes found that careless or ignorant operators will sometimestry to operate the pump after the fluid being used has been allowed tosettle for some time and find that their pump is choked. As the fluid inuse in most cases contains solid matter in suspension, this settles atthe bottom and cakes around the strainer. completely clogging it. As itis not easy to dislodge this matter from without, I provide means forblowing it outwardly from within.

V is a pipe connected at one end with the suction-pipe A and at theother end with some convenient part of the pressure side of themachine-such, for example, as the air-chamber C or the discharge-pipe B.In the drawings I show it connected with the upper end of thedischarge-pipe B. In this pipe I locate a stop-cock 1), preferably ofthe type shown in Fig. 5 of the prior patent already referred to, thoughany form of stop-cock would answer the purpose of the invention. If itis found after pumping a few strokes that the suction-pipe is clogged,the stop-cock may be opened and a rush of fluid or air from the pressureside of the apparatus is forced back through the suction-pipe and outthrough the strainer, effectually clearing the meshes of the wire-gauze,so that liquid will pass freely in the suction-pipe upon furtheroperation of the pump.

It is a common thing when starting operations to disconnect theplunger-rod from the handle, so that when the handle is worked theagitator alone is moved to properly mix the fluid in the tank. Theplunger-rod then sometimes falls to one side or the other and interfereswith the proper action of the handle.

To avoid this difficulty, I provide the head of the discharge-pipe Bwith jaws 0, between which the plunger-rod may he slipped when it isdisconnected, as described. It is thus held centrally and in proper linetill the operator is ready to again connect it with the handle.

In Fig. 1 I show the pump set in in a barrel A, the plate B, whichembraces the dischargepipe and air-chamber, being secured to the top ofthe barrel. At each side of the barrel underneath I connect a bracket C,provided with suitable flanges (Z, by which it is screwed to the sidesof the barrel, and also depending lugs a, in which are formed verticaloblong holes f In these holes are journaled the axle D, on which areplaced the wheels E. The reason for making the holes f oblong, asdescribed, is that barrels vary in shape and it is impossible toproperly attach the wheels unless some accommodation for the axle isprovided, as described. To one end of the barrel is secured a bracket F,in which is journaled the vertical axle of the swivel-wheel G. Thisbracket is provided with the flange g, screwed to the head of thebarrel, and it is also shaped to engage the chine. Near the same end ofthe barrel as the swivel-wheel are the handles H, secured at each sideof the barrel near the top. These handles are provided with the flangesh, by which they are secured to the barrel. From the lower flange iteach handle extends putwardly and rearwardly to form the part 2 Thehandle then turns at an angle and is bent somewhat backwardly in thedirection of the barrel and at the same time is run on a circlesubstantially concentric with the end of the barrel. This part islettered j. The handle then turns inwardly and rearwardly, It, to jointhe upper flange it. These handles make the barrel very easy to operate,as a straight pull is easily obtained on the parts 2". The hands alsoslide naturally up to the part y" when a lift is desired.

In Figs. 2 and 8 is shown the pressureregulator by means of which thedischarge from the spray-nozzle is rendered constant in force andvolume. It consists, as will be seen, of a casing comprising aninlet-pipe Z and an outlet-pipe 12?. These communicate with one anotherby means of the channel a. Sliding in a suitable guideway across thischannel is the regulator-plug 0, having a groove formed around itscenter, which when the plug is in its normal position registers with thechannel n Above the plug 0 is formed a chamber 0, the upper side ofwhich is formed by the corrugated diaphragm 9, held in place by thescrew-pluga".

To the inside of this diaphragm ranged in the discharge-pipe B, as shownin Fig. 2. From this construction and arrangement it follows that anyexcess of pressure in the discharge-pipe raises the diaphragm, and withit the regulator-plug, so that the channel M is restricted and a lessamount of liquid is allowed to flow through to the nozzle until thepressure again drops to the normal, when the regulator again assumes theposition shown in Fig. 8.

hat I claim as my invention is 1. In a pump, a suction-pipe, incombination with a cylindrical strainer located at the lower end of thesuction-pipe, and an agitator extending around the strainer in proximitythereto, the said agitator being vertically movable with respect to saidcylindrical strainer, substantially as described.

2. In a pump a suction-pipe, in combination with a cylindrical strainerlocated at the lower end of the suction-pipe; a verticallymovableagitator extending around the strainer in proximity thereto; and acircular brush secured to the agitator with its bristles adapted tocontact with the cylindrical sur' face of the strainer, substantially asdescribed.

3. In a pump a suction-pipe, in com'bina-f tion with a cylindricalstrainer-cage communicating with the suction-pipe and formed'in twoparts fitted together, one part being secured to the suction-pipe andthe other slid-' able thereon; and wire-gauze located around the cage,the latter having openings therein so that fluid may freely pass throughthe gauze, substantially as described.

4. In a pump a suction-pipe, in combination with a cylindricalstrainer-cage communicating with the suction-pipe and formed in twoparts fitted together, one part being secured to the suction-pipe andthe other slidable thereon; wire-gauze located around the cage, thelatter having openings therein so that fluid may freely pass through thegauze; and legs formed on the cage, substantially'as described.

5. In a pump a suction-pipe, in combina-' tion with a strainer-cagecommunicating with the suction-pipe and formed in two parts; a cylinderof wire-gauze; a series of side rods formed around the outer edge of onepart of the cage inside the gauze cylinder, each part of the cage havinga groove formed therein to receive one edge of the gauze cylinder,substantially as described.

6. In a pump a suction-pipe, in combination with a strainer-cagecommunicating with the suction-pipe and formed in two parts; a cylinderof wire-gauze; a series of side rods formed around the outer edge of onepart of the cage inside the gauze cylinder; two side rods of greaterlength than the others formed at the outer edge of one part of the cageoutside the gauze cylinder; holes being formed in the other part of thecage through which the said side rods may pass and there be bent orotherwise engaged with the cage, substantially as described.

7. In a pump a suction-pipe, in combination with a strainer-cagecommunicating with the suction-pipe and formed in two parts; a cylinderof Wire-gauze; a series of side rods formed around the outer edge of onepart of the cage inside the gauze cylinder; two side rods of greaterlength than the others formed at the outer edge of one part of the cageoutside the gauze cylinder; holes being formed in the other part of thecage through which the said side rods may pass and there be bent orotherwise engaged with the cage and legs formed on the lower part of thecage, substantially as described.

8. In a pump, the combination of the suction-pipe A; the part M of thestrainer pro vided with the base a and perforated tube 5 formed thereonand screwed to the lower end of the suction-pipe; the part N of thestrainer sleeved on the suction-pipe; the side rods 6 dependingtherefrom, and the gauze cylinder f surrounding the side rods,substantially as described. I

London, August 30, 1901.

WILLIAM HENRY HEARD.

In presence of- FLoYE E. LAwsoN, HERBERT BEATTY.

